Home / 81,493,415.40-122,198,132.70-30,349,108.20

Finding the Fourth Proportional to 81,493,415.40, 122,198,132.70 and 30,349,108.20

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Solution

The fourth proportional to 81,493,415.40, 122,198,132.70 and 30,349,108.20 is: 45,508,024.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,493,415.40 : 122,198,132.70 = 30,349,108.20 : x
  2. Step 2: Convert to fraction form
    81,493,415.40/122,198,132.70 = 30,349,108.20/x
  3. Step 3: Cross multiply
    81,493,415.40x = 122,198,132.70 × 30,349,108.20
  4. Step 4: Simplify right side
    81,493,415.40x = 3,708,604,351,150,258
  5. Step 5: Solve for x
    x = 3,708,604,351,150,258/81,493,415.40
  6. Step 6: Final answer
    x = 45,508,024.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.